<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8" />
		<title>Hello World</title>
	</head>
	<body>
		<div id="app">{{content}}</div>
		
		<script type="text/javascript" src="js/vue.js"></script>
		<script type="text/javascript">
			// let dom = document.getElementById('app');
			// dom.innerHTML = '<p>Hello World!</p>'
			
			let app = new Vue({
				el: '#app',
				data:{
					content:'Hello World!'
				}
			})
			
			setTimeout(function(){
				app.$data.content = 'bye world!!'
			},2000)
		</script>
	</body>
</html>
